在反再系统开工规程的初始状态卡上,要求好用的分析仪表为:()。
A.烟气氧含量表
B.烟气CO含量表
C.烟气二氧化碳含量表
D.以上三者都有
参考答案:D
_______ the people have become masters of their country _______ science can really serve the people.
A.It is only then; that
B.It was that; when
C.It is only when; that
D.It was when; then
下列哪个软件是公安网用计算机必须安装的()。
A.下载软件
B.音频和视频播放软件
C.聊天软件
D.公安信息网“一机两用”客户端软件